Response times values 0-1
Hello!
I've created a Go/NoGo task using the version 3.3.1 of open sesame for Mac OS. In this test, the subject is instructed to provide a response to each visual stimulus appearing in the screen (several geometric shapes) except for one (a circle) pressing the spacebar. Since subjects have to be as accurate and quick as possible, response times measurement is crucial. Yet, the last versions of my script fail to measure the response times! Namely, the value is always 0 or 1. Strangely, the previous version of my script did measure RTs, but I did not change anything in the items concerning keyboard responses recording. So, how can I solve this problem?
Here is my script, if anyone would like to have a look.
Thank you
Martina
Comments
Hi @martina.pirruccio ,
In
coroutinesyou need to indicate both when an item should start and when it should end (unless it's an item, such as asketchpad, that only has an onset).If you look at, for example, coroutines_ctrl in your experiment, you'll see that KBR_ctrl has both an end and a start time of 0. So you'll want to set the end time to a value that makes, probably 1000, given that the coroutines_ctrl has a duration of a 1000 ms. That should probably do the trick!
Hope this helps!
Sebastiaan
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Thank you @sebastiaan !!